I don't think so, if your overlay texture is a standard image file, this should not cause any harm (it's also a 100% Unity matter and not at all connected to CF).
I can count several terrains in your project window, though... perhaps CF thinks you are on another terrain and that's why the lib does not respond? Why have so many terrains in the first place?
I'm guessing here... Other than that I can't offer more input. Shouldn't be a biggie, though...
>>>>>>> Ka-Boom!
• Mulligan Municipal • Willow Heath • Pommeroy • Karen • Five Sisters • Xaxnax Borealis • Aroha • Prison Puttˆ
• The Upchuck • The Shogun • Black Swan (•)
<<<<<